What about California and Hawaii or Alaska then? Where do you draw the line?

State territories, which include the waters of the Great Lakes but not the entirety of the Pacific Ocean

International borders? There is not-US between each of Hawaii and Alaska and any other part of the country.

There is no not-US between Michigan and Minnesota.

> There is not-US between each of Hawaii and Alaska and any other part of the country.

What's the not-US between Hawaii and California?

Update: oops, I get it. The ocean itself. Never mind, move along, nothing to see here.

I would draw the line when I could stand on one shore and not visually see the other side.